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1.
Robert Hage 《Marine Policy》1984,8(1):2-15
This is a historical review of Canadian policy at the Third UN Conference on the Law of the Sea. Canadian objectives with regard to the territorial sea, fisheries, pollution prevention and the continental shelf are outlined and the role played by the Canadian delegation at UNCLOS is described. The article then examines the impact of the Convention on Canada, particular attention being paid to the Canadian Exclusive Economic Zone and the Canadian role in the controversy over seabed mining. The author concludes by arguing that Canada was a major beneficiary of the Convention, but that US opposition has placed the future of the Convention in jeopardy. 相似文献
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This work presents the results of the study of the plankton and benthic microbiocenoses of the Amur estuary. It is shown that the distribution of the total abundance and indicator groups of the bacteriobenthos are characterized by stronger heterogeneity compared with the bacterioplankton and that it depends on the Amur river drainage and the bottom type. The river drainage helps by increasing the overall bacterioplankton abundance in the near-mouth part of the estuary. Microorganisms utilizing low concentrations of OM play a major role in the processes of the OM utilization in the water and bottom sediments. Saprophytic bacteria play a significant role in the OM utilization only in the water at certain sampling sites in the Tatarskiy Strait and Sakhalin Bay and in the bottom sediments taken in the mouth part of the estuary. Some parts of the estuary subject to organic contamination are found according to the microbiological characteristics. It is shown that the fluctuation of the salinity leads to a change of the share of bacteria with different food demands in the microbial community. 相似文献
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2004年，是我国海洋工作面临历史性机遇和挑战的一年。中国海监总队在国家海洋局的领导和关怀下，在局各有关部门和各分局、各沿海省(自治区、直辖市)海洋厅(局)的大力支持下，坚持以邓小平理论和“三个代表”重要思想为指导，认真贯彻党的十六大和十六届三中、四中全会精神，全面落实局党组2004年的重点工作，以执法能力建设为重点，以海盾系列专项执法、执法示范工作为主线，上下团结一致，与时俱进，开拓进取，认真履行职能，全力推进全国海监队伍建设和海洋执法监察工作。 相似文献
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金塘大桥跨越灰鳖洋,连接金塘岛沥港镇与宁波镇海新泓口,全长18.5 km,为舟山连岛工程的主体.该大桥工程所在海域潮汐为非正规浅海半日潮,历年最大潮差为3.67 m,多年平均潮差为1.91 m;潮流呈往复流特征,且基本平行于峡道走向.金塘大桥水域东侧微冲,西侧微淤,深泓摆幅较小,深槽稳定.在海床演变分析的基础上,运用数学模型进行了桥轴线的优化,由实体定床与动床模型探讨了建桥对水动力的影响.数学模型选用2002年3月和11月实测水文测验资料对模型进行率定和验证.物理模型选取中值粒径为0.2 mm的塑料沙作为动床试验的模型沙,选用2002年11月实测水文测验资料对定床模型进行验证,选用2002年11月和2003年4月两次水下地形资料对动床模型进行河床冲淤验证,验证精度均满足相关规范要求.研究结果表明,以推荐的方案建桥对桥位近区的潮位、流速与潮量的影响均较小.建桥后,下游高潮位有所抬高,上游高潮位有所降低;上游低潮位有所抬高,下游低潮位略有降低.由于桥墩的阻水作用,使该桥所在海域海流流速整体上略有减小,减小量一般在5%以内;桥墩间因海流集中使流速有所增加.建桥使主航道航深有所增加,桥位近区与远区分别冲刷0.6～0.8 m和0.1～0.2 m;西航道桥轴线近区冲刷0.4～0.5 m,远区淤积0.1～0.2 m.建桥对甬江口、金塘锚地、七里屿锚地均无明显的不良影响,对北仑港区基本没有影响. 相似文献
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A. A. Sizov 《Physical Oceanography》1992,3(5):349-355
A conclusion about two extreme regimes existing in the large-scale circulation in the North Atlantic has been drawn based on an analysis of the inter-annual variability of the analogue to the Rossby index, as well as that of the heat and dynamic characteristics in separate areas of the north subtropical circulation. The former is defined by a high level of circulation both in the atmosphere and in the subtropical water circulation. In the current century this regime was realized mainly in the years pertaining to the middle and end of a 22-year solar activity cycle (a 22-year cycle). The relatively low level of atmospheric circulation and the slackened water mass transport are typical of the second regime. It dominated mainly during the years relevant to the beginning and second half of a 22-year solar activity cycle.Translated by Mikhail M. Trufanov. 相似文献
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The upper Oyashio intermediate water, one of the source waters for the Sea of Okhotsk intermediate water, is exhibiting a
warming trend. The historical data show that the upper Oyashio temperature increased by 2.4°C during 1953 to 2007 at the potential
density of 26.75 at depths of approximately 170 m. This rate of warming is much faster than that of the global ocean and the
Sea of Okhotsk. The upper Oyashio warming is likely linked to the penetration of warm water of the Alaskan Stream westward.
One mechanism of this warm Alaskan Stream water penetration is associated with large Aleutian eddies. 相似文献
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一、《海域使用管理法》的颁布出台，对加速发展江苏省海洋事业具有深远意义“九五”以来，在江苏省委、省政府发展海洋经济、建设“海上苏东”战略决策的推动下，地方各级政府及其海洋主管部门高度重视海洋管理工作，大力发展海洋事业，管理水平不断提高，海洋经济迅速发展。一是海洋综合管理取得了明显成效。省、市、县海洋管理机构从无到有，不断发展壮大。海域使用许可和有偿使用两项制度逐步推开。全省大比例尺海洋功能区划编制工作已基本完成。海洋环境保护工作力度不断加大，对海洋环境的监测和海洋监察执法进一步加强，海洋开发秩序… 相似文献
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Izvestiya, Atmospheric and Oceanic Physics - In this paper we show that the concept of cooling and settling of the middle and upper atmosphere formulated in 1999 finds new experimental... 相似文献
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海洋功能区划是我国政府在２０世纪８０年代末期提出并组织开展的一项海洋管理的基础性工作，其目的在于为海洋行政管理工作提供科学依据，为国民经济和社会发展提供用海保障。该项工作自提出以来，得到了全国人大、国务院和有关部门的高度重视，已经颁布实施的《中华人民共和国海域使用管理法》、《中华人民共和国海洋环境保护法》等法律法规，明确了其在海洋管理工作中的法律地位和作用。与此同时，国家海洋局会同国务院有关部门和沿海地方政府于１９８９～１９９３年、１９９８～２００１年开展了两次大规模的海洋功能区划工作，其主要成… 相似文献
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为研究感潮河段温排水的扩散规律及其与地形地貌的响应关系,建立了二维温排水数学模型,模拟了不同径流量条件下小清河下游感潮河段及河口外海域温排水扩散影响,以期对滨海电厂建设和温排水扩散研究提供借鉴。研究表明,针对小清河感潮河段弯曲、河道狭窄、河口两侧潮滩宽阔的特点,采用三角形与矩形网格嵌套的方法,能够更为准确地拟合实际岸线和地形地貌特征;采用动边界处理方法能较好地反映河口潮滩潮流场和温排水扩散特征。受小清河河口地形地貌的影响,温排水主要沿河口向上游或下游扩散,水深浅于–3 m温排水扩散面积占总面积的70%以上;小清河口外海域和取水口温升与潮位和径流量之间存在一定的相关关系。 相似文献
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<正>2009年,海洋科学技术司在国家海洋局党组的正确领导下,在各部门的大力支持下,以邓小平理论、"三个代表"重要思想和科学发展观为指导,认真落实2009年全国海洋厅局长会议和党组扩大会议精神,注重在强化职能和科学发展观整改措施落实 相似文献
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To study the propagation and transformation of riverine waters in the framework of a multilayer model based on primitive equations,
the method of through counting is suggested, involving two types of grids, namely, a fine grid in the north-western shelf
area and a large-sized grid in the deep sea. It has been shown that, in the absence of wind, riverine waters propagate over
the shelf and along the western coast of the sea. North-easterly wind presses this flow against the shore, thus intensifying
it; as a result of this, brackish waters turn out to be nearly entirely driven from the north-western shelf area and concentrate
in the western section of the open sea where they form a layer that is quasi-homogeneous, in terms of salinity. Due to the
forcing of the north-westerly wind, riverine waters penetrate into the interior of the shelf area and then move southward
toward the open sea, mixing up with the upwelling abyssal saltier waters and forming a tongue of relatively brackish waters
in the central part of the western half-basin.
Translated by Vladimir A. Puchkin. 相似文献
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The results of seismic and geochemical research of the Pionerskaya structure promising for oil and gas are reported in regard
to the forthcoming works concerning the program of subsurface geological study and development of the petroleum industry of
Russia. 相似文献
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The linear model of long waves is used for the evaluation of the parameters of tsunami waves along the South Coast of Crimea,
in the near-Kerch zone, and near the northeast coast of the Black Sea. Our numerical investigations are carried out for 24
probable locations of the elliptic zones of tsunami generation over the continental slope of the basin. The amplitude characteristics
of tsunamis are computed for 27 sites of the Black-Sea coast. It is shown that significant strengthening of tsunami waves
is possible in the course of their propagation toward the coast. The highest waves are formed at the sites of the coast closest
to the seismic source. The dependence of the intensity of tsunami waves along the Black-Sea coast on the location of the seismic
source and its magnitude is analyzed. 相似文献
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Aleksandras Rybakovas Janina Bar&#x;ien&#x; Thomas Lang 《Marine environmental research》2009,68(5):246-256
Micronuclei (MN), nuclear buds (NB) and fragmented-apoptotic cells (FA) were analyzed in mature peripheral blood and immature cephalic kidney erythrocytes of flounder (Platichthys flesus), dab (Limanda limanda) and cod (Gadus morhua) from 12 offshore sites in the Baltic Sea (479 specimens) and 11 sites in the North Sea (291 specimens), which were collected during three research vessel cruises in December 2002, 2003 and in September 2004. The highest levels of environmental genotoxicity (frequencies of MN up to 0.5‰, NB – up to 0.75‰) and cytotoxicity (FA – up to 0.53‰) were observed in flatfishes from areas close to oil and gas platforms in the North Sea and in zones related to the extensive shipping and potentially influenced by contamination from large European Rivers (Elbe, Vistula, Oder). In dab from the offshore zones of the North Sea, the levels of nuclear abnormalities were higher as compared to those in dab from the Baltic Sea. Responses in immature kidney erythrocytes were higher than in mature erythrocytes from peripheral blood. MN frequency lower than 0.05‰ (the Baltic Sea) and lower than 0.1‰ (the North Sea) could be suspected as a reference level in the peripheral blood erythrocytes of flatfish. 相似文献